Clamp



June 16, 1931. w. J; MCKEE 1,810,777

' CLAMP Original Filed Feb. 18,- 1928 a Sheets-Sheet 1 4 wy y f W. J. M KEE CLAMP 3' Sheets-Sheet 2 MY/fam J Ad /Tee,

flrtmmq Original Filed Feb. 18, 1928 June 16, 193 1.

June 16, 1931. w. J. M KEE 1,810,777

' CLAMP Original Filed Feb. 18, 1928 3 Shegets-Sheet 3 mmmx Nil I ll

Patented June 16, 1931 orrics J. MCKEE, OFv LOS ANGELES, CALIFORNIA CLAMP Application filed February 18,1928, Serial No. 255,303. Renewed November 13, 1930.

This invention relates to the class of molds and pertains particularly to amold form clamp:

The primary object of this invention is to provide in a manner as hereinafter set forth, a mold clamp for use in the'construction of poured concrete hollow building walls which will permit the quick and easy placement and removal of forms. 7

1o Another object of the invention is to provide, in a manner ashereinafter set forth, a mold form clamp which will hold the forms in such positions that after the plastic material has set the form boards can be released and removed without wrenching or prying the same thereby eliminating the danger of cracking the green concrete.

Another object of this invention is to pro- Vide, in a manner as hereinafter set forth,

a mold form clamp for use in constructing hollow building walls which will maintain inner form members in set position in such a manner as to permit the forming of the wall sections in spaced relation without concrete connecting bodies, thereby providing a hollow wall without means between the sections whereby moisture can pass from the outer wall section to the inner section.

A still further obj ect of the invention is to provide a mold clamp for use in constructing hollow building walls which will maintain the mold boards insuch a position as to permit the insertion in the wall of vertical, horizontal and cross tie reinforcing bars. 7

Numerous other objects and advantages of the present invention will become apparentv as the description of the same proceeds and the invention will be best understood from a consideration of the following detailed description taken in connection with the accompanylng drawings, forming a part of this specification, with the understanding, however, that'the invention'is not confined to any strict conformity with the showing of the drawings, but may be changed or modified so long as such changes or modifications mark no material departure from the salient features of the invention as e1 pressed in'the appended, claims,

- In the drawingsz a about the window frame.

Figure 1 shows a side elevation of the clamp structure embodying the present invention, V r

Figure 2' is a top plan view of the structure shown in Figure 1, Q ,5

Figure 3 is a section'al'view taken upon 1 the line 33 of Figure 1, r

Figure 4 isa view in side elevation of the clamp structure, 7 a

Figure 5 is a section through -the lower portion of a wall showing the manner in which the clamp maintains the form boards in position. I

Figure 6 is an outside elevational view 'of wall forms in position at the corner of a building wall showing the clamps embodying the present invention, 'holdingthe form boards in position.

Figure 7 is a plan view of the wall corner structure shown in Figure 6,

Figure 8 is a detailed View of a hinged 7 member employed to maintain the inner form bodies in proper spaced relation,

Figure 9 is a leta-iled perspective View of one corner of a wall constructed with the use of the present clamp devices, showing the manner in which the reinforcing elements can be placed in position, 7

Figure 10" is a sectional View through a wall and window casing positioned therein showing the manner in which the wall can vbe formed directlyaboutthe window frame,-

and' i v Figure ll is a horizontal sectional view through one side of a window frame installation such as that shown in Figure 10, looking downwardlyand showing the manner in which the concrete can be poured to position Referring now to the drawings in de- 9 tail, wherein like numerals of reference in-' dicate corresponding parts throughout the several views,the mold board clamp struc; ture with the inner mold plate attached thereto is indicated generally bythe numeral l and asis shown this clamp, of which a plurality is used in maintaining the form; boards: for a wall in position, comprises a Pair at substantia y 'L--' ??-P@d m m r 3 199 when the short legs 4 of the members 2 are secured together as shown and as hereinafter described, are parallel and open at one end toward the center of the clamp, as shown. In each of the passages or recesses 6 there is eccentrically mounted a binding member in the form of a disk 7 each of which members 7 carries an arm 8 which extends from the passage 6 beyond the outer side or edge of the clamp leg member 3. As is clearly shown in Figure 1 a portion of the periphery of each disk 7 extends be yond, the inner edge of its supporting leg 3 and when the disk is rotated the periphery thereof will be still further projected inwardly toward the center of the clamp.

Each of the short legs 4' of each clamp member 3has a pair of triangularly formed bodies upon the inner edge thereof as indicated at 9, the basal portion of that triangular body which is adjacent the outer end of each short leg being in alignment with the adjacent end of the leg whereas the basal portion of the inner triangular body is in opposition to the inner edgeof the adjacent long leg 3and is spaced a predetermined distance therefrom. Between the triangular portions 9 of each short leg, the inner edge of the leg is provided with a series of notches 10. l

The short legs 4 of each of the clamp members 2 are positioned in side by side relation as shown in Figure 1, the free end of each short leg being spaced from the long leg 3 of the adjacent member, a distance-equal to the space between the inner triangular member 9 and the adjacent integral long leg member 3. Suitable bolts 11 are employed a to secure the short legs of the member in v the relation described.

Each of the short legs 4 of each clampstructure is provided adacent its inner edge and adjacent its point of j oinderwithalong leg 3, with a longitudinally extending slot 12 through -which a supporting bolt '13 passes, which bolt is carried by a head member 1e, Thevhead member 14 supports a relatively long narrow metal wear or friction strip 15 against which the adjacent eccentrically mounted disks 7 bear when rotated to operative position. i

lVhen the form board clamps are to be put into use, the outer boards 16 of the form are first placed in position on the previously cast foundation, and the required number of clamps 1 are then arranged in place to straddle the form boards in the mannershown in Figure 5,tl1e upper edges of the form boards 16 being positioned beform a part of the clamp structure and these inner form plates are indicated by the numerals 19 and 20. The plates 19' and 20 are preferably formed of sheet iron 1 and are placed in the proper spaced parallel relationbetween and spaced from the inner faces of the outer form members 16 as shown in Figure 5, the top edges of the plates engaging in certain of the notches 10 by which they are held at their upper edges in proper spaced relation.

In order to maintain the lower portions of the plates 19 and 20 in the prbper spaced relation, one of the plates, for example, plate 20, is provided with an especially designed spacing brace'member indicated as a whole by the numeral 21. This brace and spacer is in theform of a hinge, having one leaf 22 secured to the inner faceiof the plate 20 while the other leaf 23 is adapted to be positioned substantially horizontally between the plates 19 and 20, the leaf 23 having the brace arm 24' formed integral therewith and extending from one-face thereof for engagement with previously formed wall structure to prevent the leaf from swinging below the horizontal. The free end of the leaf 23 is turned to provide a foot 25 which bears against the inner face of the'adjacent form plate 19 in the manner shown in Figures 1 and 5. When the clamps have thus been placed in position over the outer form boards 16 the inner,

plates 19 and 20 are placed in the position described, the lower ones of the eccentrically mounted disks 7 are rotated by forcing the arm 8 downwardly to force the lower edges of the form boards 16inwardly against the adjacent face of the previously east foundation wall, the forcing of thebrace member 21 into its position securely clamping the plates 19 and 20 against the inner faces of the previously formedfoundation'wall sections. After this the upper ones of the eccentric disks 7 arerotated by forcing the arms 8 downwardly to press the upper edges of the mold boards 16 against the triangular bodies 9, this inward movement of the board and the friction strips 15 being permitted by the mounting of the supporting bolts 14 of the friction strips in the slot 12. r

It is, of course,jtobeunderstood thatprevious to placing the mold boards 16 in the positions described; and theactuating of the eccentrics 7. the foundation must be first provided with low inner and outer wall sections corresponding to those indicated by the numerals 17 and 18, thisbeing done by the constructing of the usual forms and casting of these low walls in the usual manner.

From the foregoing description, it will be readily seen that by the use of outer mold boards held in posi ion by clamp members of the character herein described in association with inner form plates maintained in position by the clamp members,,use of vertical reinforcing bars 2% and horizontal and transverse bars 27 and 28 respectively may type, by the use of form clamps of the character described, the inner and outer wall sections may be maintained in spaced relation with nothing connecting therebetween through which moisture can pass from the outer to the inner wall sections, the con necting bars 28 not acting as moisture ab sorbers. To prevent rusting of the connecting bars 28 the same may be coated with phalt or a similar preparation.

V hen finishing off the top of the wall of the character herein described, the outer mold board 16 can be retained in position. right to the top of the wall, whereas the inner plates 19 and 20 can be eliminated so as to permit the forming of a solid beam such as that indicated at 29 in Figure 10, to connect the top edges of the outer and innor wall sections 17 and 18.

By the use of forms held in position with clamps of the character described, windows or doors of any size may be placed in any wall without having, to cut or iit forms either inside or outside, as the outside wood forms are placed all around the building and window and door jambs are set therebetween with the jambs furred out to the full idth of the wall.v As the inside form plates 19 and 20 are of thin sheet metal they are simply slipped into position with their edges abutting the window or door jamb. Thus after the concrete has been poured and has set and forms removed, it will be found that the concrete has formed itself tightly about the window or door frames thus making a perfect air tight fitor joint therebetween.

The manner in which the concrete after setting snugly engages throughout the sides of the window frame, is clearly shown in Figures 10 and 11, the window frame here being indicated generally by the numeral 30. It will be readily understood from the disclosure that little difliculty will be encountered in setting window and door frames in a wall and'thus time and labor will be saved.

From the foregoing description it will be readily seen-that the hereindescribed clamp can be easily and quickly placed in or re moved from position, will efficiently maintainform boards in their positions until the cement has-set, and can'be readily released by shifting the eccentric disks 7 to permit the removal of the form boards without danger of cracking or breaking the wall.

l/Vhat I claim is: V f 1. A form clamp for hollowpoured concrete walls employing the usual form boards for the outer faces of the wall, comprising a pair of elongated members designed to extendsubstantially vertically over the outer mold boards, means for connecting said members at their upper ends,apair of mold plates designed to be arranged in spacedrelation to form the hollow center of the wall, means for adjustably connecting the top edges of said mold plates with said connecting means, a brace element carried by one I of said plates designed 'toengage the adjacent plate to maintain the lower edges of the platesin spaced relation, a swinging guard strip carried by said connecting means and designed to be arranged between an elongated member and the adjacent outer mold board,-means carried by said elongated members for exerting an inward pressure against the guard strips and the adjacent outer mold boai'ds, andrmeans associated with said connecting means for limiting the inward movement of the outer mold boards under the pressure exerted thereon by the said pressure exerting means.

2. A wall mold board clamp of the character described comprising a pair of substantially L-shaped members having a long! arm and a short arm, means for securing the short arm of the members in oppositely directed side by side relation to arrange the long arms of the members in spaced parallel ranged therebetween substantially as de-.

scribed, and guard strips suspended from. said short legs for interposition between the clamp members and the mold boards.

3. A wall mold board clamp of the character described, comprising a pair of substantially L-shaped members having a long arm and a short arm, means for securing the short arm of the members in oppositely directed side by side relation to arrange the long arms of the members in spaced parallel relation, eccentrically pivoted clamp members carried by the long arms of the members for engagement with mold boards arranged therebetween, guard strips suspended from said short legs for interposition between the clamp members and the mold boards, means forming a part of the struc ture of said short legs for limiting the inward movements of the mold boards under the pressure of the clamps, and means for connecting a pair of mold plates with said short legs of the members to maintain the plates in spaced relation with respect to one another for the purpose described.

4. A wall mold board clamp comprising a pair of substantially L-shaped members having a long arm and a short arm, means for securing the short arms of the members in oppositely directed side by side relation to arrange the long arms of the members in spaced parallel relation, guard strips suspended from said short legs for engaging the mold boards, means carried by the long arms for urging the guard strips toward the mold boards, and depending abutment bodies carried by the short arms in spaced relation to the long arms of the members for engaging the inner faces of the mold boards.

5. A wall mold board clamp comprising a pair of substantially L-shaped members having a long arm and a short arm, means for securing the short arms ofthe members in oppositely directed side by side relation to arrange the long arms of the members in spaced parallel relation, guard strips pivotally suspended from saidshort arms for engaging the mold boards, and eccentrically mounted pivoted clamp members carried by the opposite ends of the long arms of the -members for engaging the guard strips adjacent to the opposite ends thereof.

In testimony whereof I affix my signature.

WILLIAM J. McKEE. 

